Rachel Olding and Michael Koziol

Human remains that could be those of missing five-year-old Chayce Kofe have been found in the water off Pearl Beach on the central coast.

Relatives have shared their grief and heartache online, saying they may finally be able to bring their "baby boy" home.

A memorial to Chayce Kofe on Pearl Beach. Photo: Facebook

"I knew you would come back to us Chayce boy I never gave up," said an aunt, Lisa Kelly.

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A dog walker spotted what he believed to be human remains in seaweed at the beach on Monday afternoon, two weeks after Chayce was swept out to sea while playing on the shoreline.

Police have taken the remains for forensic examination.

Chayce Kofe, who was swept away at Pearl Beach on the central coast.

Inspector Nigel Webber of Brisbane Water Local Area Command told Fairfax Media the remains were "partial" and were consistent with that of a child.

"Although we haven’t formally identified the child, our investigations will be surrounding the missing five-year-old," he said. Police hope to have a result within 24 hours.

Chayce had been swimming just metres from his aunt's holiday rental home when a large wave broke on the beach.

Members of the public tried to reach Chayce but were knocked back by ferocious waves. A subsequent air and sea search could not locate him and was called off days later.

His father, Daniel Kelly, was not present at the time and spent the nights following the tragedy pacing up and down the beach.

Mr Kelly said he just wanted the body of his "beautiful little boy" to come home.

"He was beautiful, just a special little kid," he said. "It’s heartbreaking, I just want to get my son back. I just want to get him back home. I miss him so much."

Another relative posted online: "Power of family, love and strength can overcome any challenge life has set for us.

"We will never fully heal of our losses, but we will become stronger," she wrote.

Central coast lifesavers provided resources, including a jet ski, to police divers on Monday afternoon. The director of Surf Life Saving for the central coast, Brett Beswick, said swells of up to three metres over the weekend may have dislodged the remains.

“The big seas we’ve had in the last few days have obviously brought him out from wherever he was … which hopefully gives the family a bit of closure,” he said.

According to resident Anthony Learmonth, Pearl Beach is one of the state's most deceptively dangerous beaches and its waves were breaking violently on the day Chayce went missing.